horizontal UIcollectionView Scroll start from right to left

Question

I do want the view when it loads to show the right cell first then I should scroll left from there I try this code but didn't work

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! customCell
        cell.data = self.data[indexPath.row]
        self.collectionView.scrollToItem(at: IndexPath(item: self.data.count, section: 0) as IndexPath, at: .right, animated: false)
        return cell
    }

like this photo here when the view loads it shows the first right cell

my cells is horizontal when the view loads it will show the left side the right side will be covered by the screen so I want to reverse this, by showing the right cell first — mazenqp, May 25 '20 at 12:44
try changing the semantics - https://stackoverflow.com/questions/25598194/aligning-right-to-left-on-uicollectionview — CrackIt, May 25 '20 at 12:59
link suggested by @CrackIt is the answer of your question !!! — Nayan Dave, May 25 '20 at 13:39

score 2 · Accepted Answer · edited May 25 '20 at 13:45

2

Since UICollectionView scrolls horizontally from right to left equally, you can set your collection view when it appears, to appear scrolled to the maximum right ! so that the user can start scrolling from right to left

YourCollectionView is the name of your desired CollectionView

YourObjectListData is the Datasource for that collection view

self.YourCollectionView.reloadData()
self.YourCollectionView.scrollToItem(at: NSIndexPath(item: self.YourObjectListData.count - 1, section: 0) as IndexPath, at: .right, animated: false)

edited May 25 '20 at 13:45

Nayan Dave

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answered May 25 '20 at 13:28

Ahmed Abdulkareem

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thats solve the problem but why this method dont work in viewDidLoad or in any of collectionView functions ?? – mazenqp May 25 '20 at 14:07
Because viewDidLoad is only called once in the view lifecycle (the first time the view loads) you could add it in viewWillAppear . Try googling View life cycle methods in iOS – Ahmed Abdulkareem May 26 '20 at 07:24

score -1 · Answer 2 · answered May 25 '20 at 11:36

-1

This is not a usual behaviour for a UICollection view, but how about rotating and flipping your collectionView, then the last cell will be your first ;).

if interested check CGAffineTransform(Rotation angle) and CGAffineTransform(TranslationY).

answered May 25 '20 at 11:36

MOHi91

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I don't know if you getting my question – mazenqp May 25 '20 at 12:50
Yea I though you want it to be mirrored, sorry! I did not know that you want it for a different language (Arabic) which is being read from left to right. well I guess you got the answer now :) happy coding. – MOHi91 May 26 '20 at 10:31

horizontal UIcollectionView Scroll start from right to left

2 Answers2